JPS6183315U - - Google Patents
Info
- Publication number
- JPS6183315U JPS6183315U JP16902984U JP16902984U JPS6183315U JP S6183315 U JPS6183315 U JP S6183315U JP 16902984 U JP16902984 U JP 16902984U JP 16902984 U JP16902984 U JP 16902984U JP S6183315 U JPS6183315 U JP S6183315U
- Authority
- JP
- Japan
- Prior art keywords
- reflector
- sub
- radio wave
- skirt portion
- antenna
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 1
Landscapes
- Aerials With Secondary Devices (AREA)
Description
第1図は本考案の第一実施例の電波通路の説明
図。第2図は本考案の第二実施例の電波通路の説
明図。第3図はオフセツトカセグレンを用いた従
来例構造の電波通路図。第4図はオフセツトグレ
ゴリアンを用いた従来例構造の電波通路図。
1…一次放射器、2…副反射鏡、3…主反射鏡
、4…一次放射器から直接空間に放射される不要
電波、5…電波反射面を形成するスカート部、6
…主反射鏡で反射された不要電波、7…電波吸収
面を形成するスカート部、8…上記7に吸収され
る不要電波、9…アンテナ軸。
FIG. 1 is an explanatory diagram of a radio wave path according to a first embodiment of the present invention. FIG. 2 is an explanatory diagram of a radio wave path according to a second embodiment of the present invention. FIG. 3 is a radio wave path diagram of a conventional structure using an offset cassegrain. FIG. 4 is a radio wave path diagram of a conventional structure using an offset Gregorian. 1...Primary radiator, 2...Sub-reflector, 3...Main reflector, 4...Unwanted radio waves radiated directly into space from the primary radiator, 5...Skirt portion forming a radio wave reflecting surface, 6
...Unnecessary radio waves reflected by the main reflecting mirror, 7...Skirt portion forming a radio wave absorption surface, 8...Unwanted radio waves absorbed by the above 7, 9...Antenna axis.
Claims (1)
と、 この副反射鏡に対向して設けられた主反射鏡と
を備えた副反射鏡付きアンテナにおいて、 上記一次放射器と上記副反射鏡との間に、電波
ビームを細く制限するスカート部を設けたことを
特徴とする副反射鏡付きアンテナ。 (2) スカート部は電波反射面である実用新案登
録請求の範囲第(1)項に記載の副反射鏡付きアン
テナ。 (3) スカート部は電波吸収面である実用新案登
録請求の範囲第(1)項に記載の副反射鏡付きアン
テナ。[Claims for Utility Model Registration] (1) A device comprising a primary radiator, a sub-reflector provided opposite to the primary radiator, and a main reflector provided opposite to the sub-reflector. An antenna with a sub-reflector, characterized in that a skirt portion is provided between the primary radiator and the sub-reflector to narrow a radio wave beam. (2) The antenna with a sub-reflector according to claim (1) of the utility model registration, wherein the skirt portion is a radio wave reflecting surface. (3) The antenna with a sub-reflector according to claim (1) of the utility model registration, wherein the skirt portion is a radio wave absorbing surface.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16902984U JPS6183315U (en) | 1984-11-06 | 1984-11-06 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16902984U JPS6183315U (en) | 1984-11-06 | 1984-11-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6183315U true JPS6183315U (en) | 1986-06-02 |
Family
ID=30726781
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16902984U Pending JPS6183315U (en) | 1984-11-06 | 1984-11-06 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6183315U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0279612U (en) * | 1988-12-05 | 1990-06-19 | ||
JPH02192303A (en) * | 1989-01-20 | 1990-07-30 | Nec Corp | Sub reflecting mirror antenna |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56158506A (en) * | 1980-05-12 | 1981-12-07 | Nippon Telegr & Teleph Corp <Ntt> | Reflecting mirror antenna device |
-
1984
- 1984-11-06 JP JP16902984U patent/JPS6183315U/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56158506A (en) * | 1980-05-12 | 1981-12-07 | Nippon Telegr & Teleph Corp <Ntt> | Reflecting mirror antenna device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0279612U (en) * | 1988-12-05 | 1990-06-19 | ||
JPH02192303A (en) * | 1989-01-20 | 1990-07-30 | Nec Corp | Sub reflecting mirror antenna |
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